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We construct a privacy-preserving, distributed and decentralized marketplace where parties can exchange data for tokens. In this market, buyers and sellers make transactions in a blockchain and interact with a third party, called notary,…

密码学与安全 · 计算机科学 2020-02-25 Ariel Futoransky , Carlos Sarraute , Daniel Fernandez , Matias Travizano , Ariel Waissbein

Censorship resistance with short-term inclusion guarantees is an important feature of decentralized systems, missing from many state-of-the-art and even deployed consensus protocols. In leader-based protocols the leader arbitrarily selects…

分布式、并行与集群计算 · 计算机科学 2025-08-19 Orestis Alpos , Bernardo David , Nikolas Kamarinakis , Dionysis Zindros

Many blockchain-based protocols, such as Bitcoin, implement a decentralized asset transfer (or exchange) system. As clearly stated in the original paper by Nakamoto, the crux of this problem lies in prohibiting any participant from engaging…

分布式、并行与集群计算 · 计算机科学 2019-06-14 Rachid Guerraoui , Petr Kuznetsov , Matteo Monti , Matej Pavlovic , Dragos-Adrian Seredinschi

In this paper we present the initial design of Minerva consensus protocol for Truechain and other technical details. Currently, it is widely believed in the blockchain community that a public chain cannot simultaneously achieve high…

分布式、并行与集群计算 · 计算机科学 2018-12-04 Eric Zhang , Hendrik C , Yang Liu , Archit Sharma , Jasper L

Peer-to-peer (p2p) content delivery is promising to provide benefits like cost-saving and scalable peak-demand handling in comparison with conventional content delivery networks (CDNs) and complement the decentralized storage networks such…

密码学与安全 · 计算机科学 2021-09-28 Songlin He , Yuan Lu , Qiang Tang , Guiling Wang , Chase Qishi Wu

The recent adoption of blockchain technologies and open permissionless networks suggest the importance of peer-to-peer atomic cross-chain transaction protocols. Users should be able to atomically exchange tokens and assets without depending…

数据库 · 计算机科学 2021-03-30 Victor Zakhary , Divyakant Agrawal , Amr El Abbadi

This paper proposes a new microblogging architecture based on peer-to-peer networks overlays. The proposed platform is comprised of three mostly independent overlay networks. The first provides distributed user registration and…

网络与互联网体系结构 · 计算机科学 2013-12-30 Miguel Freitas

Bitcoin and Ethereum are novel mechanisms for decentralizing the concept of money and computation. Extending decentralization to the human identity concept, we can think of using blockchain for creating a list of verified human identities…

密码学与安全 · 计算机科学 2018-06-21 MohammadJavad Hajialikhani , MohammadMahdi Jahanara

Blockchain networks are facing increasingly heterogeneous computational demands, and in response, protocol designers have started building specialized infrastructure to supply that demand. This paper introduces Resonance: a new kind of…

计算机科学与博弈论 · 计算机科学 2024-11-20 Maryam Bahrani , Naveen Durvasula

Traditionally, peer-to-peer systems have relied on altruism and reciprocity. Although incentive-based models have gained prominence in new-generation peer-to-peer systems, it is essential to recognize the continued importance of cooperative…

分布式、并行与集群计算 · 计算机科学 2023-08-15 Bulat Nasrulin , Rowdy Chotkan , Johan Pouwelse

Motivated by the great success and adoption of Bitcoin, a number of cryptocurrencies such as Litecoin, Dogecoin, and Ethereum are becoming increasingly popular. Although existing blockchain-based cryptocurrency schemes can ensure reasonable…

密码学与安全 · 计算机科学 2016-12-02 Jian Liu , Wenting Li , Ghassan O. Karame , N. Asokan

Many studies have been done to improve the performance of centrally controlled business processes and enhance the integration between different parties of these collaborations. However, the most serious issues of collaborative business…

密码学与安全 · 计算机科学 2019-04-12 Vahid Pourheidari , Sara Rouhani , Ralph deters

Smart contracts are cryptographic protocols that are enforced without a judiciary. Smart contracts are used occasionally in Bitcoin and are prevalent in Ethereum. Public quantum money improves upon cash we use today, yet the current…

量子物理 · 物理学 2022-09-20 Or Sattath

The development of blockchain technologies has enabled the trustless execution of so-called smart contracts, i.e. programs that regulate the exchange of assets (e.g., cryptocurrency) between users. In a decentralized blockchain, the state…

编程语言 · 计算机科学 2020-04-28 Massimo Bartoletti , Letterio Galletta , Maurizio Murgia

E-commerce in today's conditions has the highest dependence on network infrastructure of banking. However, when the possibility of communicating with the Banking network is not provided, business activities will suffer. This paper proposes…

计算工程、金融与科学 · 计算机科学 2010-11-02 Majid Taghiloo , Mohammad Ali Agheli , Mohammad Reza Rezaeinezhad

Empirical data shows that in the absence of incentives, a peer participating in a Peer-to-Peer (P2P) network wishes to free-riding. Most solutions for providing incentives in P2P networks are based on direct reciprocity, which are not…

多媒体 · 计算机科学 2011-02-09 Yu Zhang , Mihaela van der Schaar

In order to have transactions executed and recorded on blockchains such as the Ethereum Mainnet, fees expressed in crypto-currency units of the blockchain must be paid. One can buy crypto-currency called Ether of the Ethereum blockchain…

分布式、并行与集群计算 · 计算机科学 2021-08-20 Serdar Metin , Can Özturan

Recently, cybersecurity becomes more and more important due to the rapid development of Internet. However, existing methods are in reality highly sensitive to attacks and are far more vulnerable than expected, as they are lack of trustable…

密码学与安全 · 计算机科学 2018-11-28 Yu Han , Zhongru Wang , Qiang Ruan , Binxing Fang

A blockchain is a distributed ledger forming a distributed consensus on a history of transactions. It is the underlying technology for the Bitcoin cryptocurrency, but there are many applications beyond the financial sector. With built-in…

密码学与安全 · 计算机科学 2019-12-23 Nathaniel Aldred , Luke Baal , Graeham Broda , Steven Trumble , Qusay H. Mahmoud

This document is a specialized technical description of one of the potential implementations of a second layer protocol over Gravity, a blockchain-/token-agnostic decentralized oracle protocol. The SuSy protocol prescribes an implementation…

密码学与安全 · 计算机科学 2020-09-03 Aleksei Pupyshev , Elshan Dzhafarov , Ilya Sapranidi , Inal Kardanov , Shamil Khalilov , Sten Laureyssens